A Luxembourg tax ruling is a written decision under § 29a AO on how the law applies to a transaction not yet carried out. The tax office decides after an opinion of the Commission des décisions anticipées. The fee is EUR 3,000 to EUR 10,000, the answer usually comes two to three months after payment, and it binds for up to five years while facts and law stay the same. Cross-border rulings and APAs are exchanged with other EU states. VAT is outside the procedure.
A written promise from the tax office, for one transaction
A tax ruling is a written answer from the Luxembourg tax administration on how the law applies to a transaction you plan to carry out. In Luxembourg it is called a décision anticipée, and English-speaking advisers say advance tax agreement, ATA, or advance pricing agreement, APA, when the question concerns transfer pricing. Once issued, it binds the administration for up to five tax years, provided the facts are as described and the law does not change.
In November 2014 the LuxLeaks disclosures published hundreds of rulings agreed with large groups, many approved quickly and without a clear legal basis. Luxembourg reacted within weeks. Since 1 January 2015 every ruling follows a statutory procedure, goes through a commission, costs a fee and is summarised in the administration's annual report. Cross-border rulings are sent to other EU states.
Volumes fell sharply. The government reported 539 requests in 2015 and 71 in 2020; practitioner guides citing official figures count 36 rulings processed in 2023 and 32 in 2024, of which 27 were approved. A ruling today is a tool for a real question with real money at stake, not a routine part of setting up a holding company. This note explains when it is worth asking, how the procedure runs, what other states see, and offers a checker for your case.
§ 29a AO
Abgabenordnung, in force since 1 January 2015.
EUR 3,000–10,000
Statutory, set per request, not refunded.
Up to 5 years
Binding while facts and law are unchanged.
DAC3, BEPS 5
Cross-border rulings and APAs go to other states.
§ 29a AO, the regulation and the commission
The statute. The Law of 19 December 2014 inserted § 29a into the Abgabenordnung, the general tax law that Luxembourg inherited from Germany and still uses for procedure. § 29a allows the tax office to issue, on a written and reasoned request, an advance decision on the application of tax law to one or more precise operations that the taxpayer seriously envisages and that have not yet produced their effects. The same law introduced the administrative fee. A Grand-Ducal regulation of 23 December 2014 sets out the content of the request and the working of the commission.
The commission. The Commission des décisions anticipées assists the tax offices so that the law is applied uniformly and equally. Its members and president are appointed by the director of the Administration des contributions directes from officials of the directorate and of the assessment service; practitioner guides describe a committee of four to six senior officials. For companies, the tax office submits every request to the commission and follows its opinion. A single inspector can no longer give a binding answer alone.
What a ruling cannot do. A ruling confirms how existing law applies. It cannot grant an exemption, a reduced rate or a negotiated tax base that the law does not provide. That rule, written into the regulation, is the direct answer to the State aid cases discussed below. There is no appeal against a refusal; the taxpayer can still proceed and defend its position at assessment.
Old rulings. Rulings issued before 2015 lost their binding effect from tax year 2020, under the budget law for that year. Transfer pricing decisions on financing companies issued under the pre-2017 circulars stopped binding the administration from 1 January 2017.
Law and practice: Abgabenordnung (loi générale des impôts), § 29a, inserted by the Law of 19 December 2014; Grand-Ducal Regulation of 23 December 2014 on the procedure for advance decisions; Government of Luxembourg, FAQ on tax rulings (gouvernement.lu); Chambers Tax Controversy 2026, Luxembourg chapter, for the 2023 and 2024 figures.
Request, fee, commission, decision
Content of the request. The request goes in writing to the competent tax office. It must identify the applicant and, where relevant, the other parties; describe the envisaged operations in detail; set out the applicant's legal analysis of the tax issues and the treatment it asks the office to confirm; and contain a statement that the information is complete and accurate.
The fee. The director sets an administrative fee between EUR 3,000 and EUR 10,000 per request, according to the complexity of the file and the workload it causes. It must be paid within one month, and the commission starts only once it is paid. The fee is not refunded if the request is withdrawn, refused or answered negatively. Practitioners report that transfer pricing requests often attract the full EUR 10,000. The amount is fixed in the law, not indexed.
| Step | What happens | Indicative timing |
|---|---|---|
| 1. Preparation | Facts, structure chart, steps, legal analysis, proposed tax treatment, documents | Two to six weeks, depending on the file |
| 2. Filing | Written, reasoned request to the competent tax office, signed with a statement that the facts are complete and accurate | Day 0 |
| 3. Fee | The director sets the fee between EUR 3,000 and EUR 10,000; payable within one month | Within a month of filing |
| 4. Commission | The Commission des décisions anticipées examines the request, may ask questions or hear the applicant | After payment |
| 5. Decision | The tax office issues a written decision, positive or negative, or the request is withdrawn | About two to three months after payment (practice) |
| 6. Validity | Binding for at most five tax years, subject to facts and law staying the same | Up to five years |
Timing. The law sets no deadline. Practitioner guides report a final answer about two to three months after the fee is paid; a request that raises new questions takes longer. The commission may invite the applicant's advisers to present the case orally, but only if it decides that this would help. A ruling requested two weeks before signing will not arrive in time.
Binding effect. A positive decision binds the administration for at most five tax years. It ceases to bind if the facts were incomplete or inaccurate, if the operations carried out differ from those described, or if the decision becomes incompatible with Luxembourg, EU or international law. A change in the law, a reversal in administrative case law or a change in an essential feature of the transaction also ends it. It protects against a change of mind, not a change of law.
Law and practice: § 29a AO and the Regulation of 23 December 2014 on content, fee and binding effect; Law of 19 December 2014 on the administrative fee of EUR 3,000 to EUR 10,000; Chambers Tax Controversy 2026 and Transfer Pricing 2026, Luxembourg chapters, on timing and fee practice.
What a ruling can and cannot cover
The commission answers questions of law applied to precise facts. It does not decide what the facts are, value an asset, or answer a hypothetical question. Our note on substance requirements lists what the tax office expects to see.
| Topic | Ruling usually available? | Comment |
|---|---|---|
| Qualification of a hybrid or convertible instrument (CPEC, PEC, profit participating loan) | Yes | Debt or equity for Luxembourg tax, deductibility, withholding tax; anti-hybrid rules checked |
| Participation exemption on dividends and gains (Article 166 LIR) | Yes | Usually for a specific holding and instrument, not for the conditions in general |
| IP box (Article 50ter LIR) | Yes | Qualifying asset, nexus ratio, tracking of income and expenditure |
| Tax unity (Article 164bis LIR) | Yes | Eligibility of members, horizontal unity |
| Mergers, divisions, share exchanges, migrations | Yes | Tax neutrality and roll-over; exit and step-up values |
| Intra-group pricing and financing margins | Yes, as an APA | Under § 29a AO with a transfer pricing study |
| Carried interest qualification for a resident manager | Possible | Function and type of carry under the 2026 regime; exchange rules apply |
| Real estate structures | Yes, on specific points | Rental income, municipal business tax, gains |
| VAT | No | Outside § 29a; ask the AED in writing |
| Questions of fact, valuations, hypothetical cases | No | The commission rules on law applied to precise facts |
| Transactions already carried out | No | Position taken in the return and defended at assessment |
VAT. § 29a covers the taxes administered by the Administration des contributions directes: corporate income tax, municipal business tax, net wealth tax, personal income tax and withholding taxes. VAT belongs to the Administration de l'enregistrement, des domaines et de la TVA. The AED answers written questions in its own practice, but without a statutory procedure, fee or commission. For holding VAT, see our note on management fees and directors.
Informal clearance. Before 2015 many positions were agreed at a meeting with the inspector and confirmed in a short letter. That practice no longer produces binding results. External participants in an informal meeting sign a form confirming that it is purely informative and that nothing said, or left unsaid, binds the administration. It is useful to test a reading, not certainty.
Other ways to manage risk. Where a ruling is not available or not worth it, the alternatives are a documented position in the return and a legal opinion, which binds nobody but shows good faith. Neither gives the protection of § 29a.
Law and practice: § 29a AO (taxes covered); Law of 12 February 1979 on VAT; Government of Luxembourg FAQ on rulings, on informal meetings; Income Tax Law (LIR), Articles 50ter, 164bis and 166.
Unilateral and bilateral APAs, and financing companies
Unilateral APA. In Luxembourg an advance pricing agreement is simply a § 29a decision on a transfer pricing question. It confirms that the price or margin of an intra-group transaction is at arm's length under Article 56 and Article 56bis of the income tax law. It binds only Luxembourg. The same fee band and five-year limit apply, and the request must be filed before the transaction. See our note on transfer pricing in Luxembourg.
Bilateral and multilateral APAs. A unilateral APA does not stop the other state from adjusting the price on its side, which leaves double taxation. A bilateral APA is agreed between the competent authorities of both states under the mutual agreement article of the tax treaty. Luxembourg has no specific statutory procedure for them yet. Bill no. 8186, filed on 28 March 2023, proposed one, with a fee of EUR 10,000 to EUR 20,000; the bill was split, and the APA part sits in bill no. 8186B, which practitioner guides in 2026 still describe as pending. Until it passes, bilateral APAs run under the treaty MAP framework and the circular of 11 March 2021, with no fee. Expect them to take far longer, often more than a year.
Financing companies. Circular L.I.R. n° 56/1 – 56bis/1 of 27 December 2016 governs companies that lend and borrow within a group. It sets substance conditions: a majority of the directors resident in Luxembourg or taxable there on at least half of their professional income, key decisions taken in Luxembourg, qualified staff, and Luxembourg tax residence only. A purely intermediary financing company that meets them may use a simplification: a minimum return of 2% after tax on the financed assets is accepted as arm's length. Any lower return needs a transfer pricing study. An APA remains available under § 29a, but the request must include a functional analysis, the equity needed to bear the risks, a comparables search and projected accounts.
Law and practice: LIR, Articles 56 and 56bis; Circular L.I.R. n° 56/1 – 56bis/1 of 27 December 2016, paragraphs 21 to 34 (impotsdirects.public.lu); bill no. 8186 of 28 March 2023 and bill no. 8186B; Circular L.G. – Conv. D.I. n° 60 of 11 March 2021 on mutual agreement procedures; Law of 20 December 2019 on tax dispute resolution mechanisms in the EU.
Who sees your ruling: annual report, DAC3, State aid, DAC6 and Pillar Two
Annual report. The administration publishes anonymised summaries of the decisions in its annual report, with the legal provisions concerned.
DAC3 and BEPS Action 5. Directive (EU) 2015/2376, known as DAC3, transposed in Luxembourg by the Law of 23 July 2016, requires member states to exchange information on advance cross-border rulings and APAs automatically. Every six months Luxembourg sends a standard summary to all other member states: the taxpayer and its group, the content, dates and amount, the transfer pricing method and the states and persons likely to be affected. Under the OECD standard on BEPS Action 5, rulings within six categories are also exchanged spontaneously with treaty partners. Assume a cross-border ruling will be read by the tax authorities of every country in the structure.
Individuals since 2026. DAC3 originally excluded rulings that concern only the tax affairs of individuals. DAC8, Directive (EU) 2023/2226, narrowed that exclusion: advance cross-border rulings for individuals issued, amended or renewed from 1 January 2026 are exchanged where the transaction, or series of transactions, exceeds EUR 1.5 million. A ruling for a fund manager on a large carry entitlement can therefore travel.
State aid. From 2015 the European Commission treated several Luxembourg rulings as unlawful State aid. The Court of Justice annulled the decisions. In Fiat Chrysler Finance Europe (C-885/19 P, 8 November 2022) it held that the advantage must be assessed against the normal Luxembourg tax system, not an abstract arm's length standard. In Engie (C-451/21 P, 5 December 2023) it annulled the decision on rulings covering convertible loans. In Amazon (C-457/21 P, 14 December 2023) it dismissed the Commission's appeal. Since 2015 a ruling must simply apply Luxembourg law as written, and the State aid risk of a correct ruling is low. A ruling that departs from the ordinary rules still gives no protection.
DAC6. A ruling does not remove the duty to report a cross-border arrangement that meets a hallmark. See our note on DAC6 reportable arrangements.
Pillar Two. For groups with consolidated revenue of EUR 750 million or more, the Luxembourg minimum tax law of 22 December 2023 applies a 15% floor computed on accounting profit. A ruling confirming that income is exempt in Luxembourg does not bind the GloBE calculation; it may simply move the tax into a top-up. Groups in scope should test the ruling against the minimum tax before filing it.
Law and practice: Council Directive (EU) 2015/2376 (DAC3), Article 8a of Directive 2011/16/EU; Law of 23 July 2016; Council Directive (EU) 2023/2226 (DAC8) on rulings for individuals; OECD BEPS Action 5; Court of Justice, C-885/19 P Fiat Chrysler Finance Europe, 8 November 2022; C-451/21 P Luxembourg and Engie, 5 December 2023; C-457/21 P Commission v Amazon, 14 December 2023; Law of 22 December 2023 on the minimum tax.
Three cases with figures
The examples are illustrative. They use the combined corporate tax rate of 23.87% in Luxembourg City for 2026 (16% corporate income tax, the 7% employment fund surcharge and 6.75% municipal business tax); budget bill no. 8800 would lower it to 22.80% from 2027.
A SOPARFI finances its Luxembourg operating subsidiary partly with convertible preferred equity certificates, CPECs, and expects a yield of EUR 2 million a year. It treats the yield as a dividend on a qualifying participation, exempt under Article 166 LIR, and the subsidiary does not deduct it. If the administration read the CPECs as debt, the yield would be taxable interest: EUR 477,400 a year at 23.87%, or about EUR 2.39 million over five years. Against that, the ruling costs a fee of at most EUR 10,000, advisers' time and two to three months. The case for a ruling is strong. If the issuer were abroad, the ruling would be exchanged under DAC3, and the anti-hybrid rules of Article 168ter would be tested too: no exemption for a payment deducted at the payer.
A Luxembourg-resident portfolio manager expects EUR 600,000 of contractual carry from a fund. Under the regime in force from tax year 2026, contractual carry is taxed at a quarter of the global rate: at most about 11.45%, or EUR 68,700. Taxed as ordinary income at the top rate of 45.78%, it would cost about EUR 274,700. The difference, roughly EUR 206,000, turns on the manager's function and the type of carry. A ruling on those two points, filed before the carry agreement is signed, removes the doubt. If the carry and fund are cross-border and the amount exceeds EUR 1.5 million, the ruling is exchanged under DAC8. Our note on carried interest for fund managers covers the regime.
A Luxembourg finance company borrows EUR 50 million from its Belgian parent at 4.00% and lends it to a German affiliate at 4.30%. The spread gives EUR 150,000 of taxable margin a year. Under the simplification of the 2016 circular, the company would need EUR 1 million after tax, about EUR 1.31 million before tax, a margin the group cannot justify commercially. Its transfer pricing study supports EUR 150,000 based on the equity at risk and its functions. The tax at stake is the difference: about EUR 1.16 million of taxable profit, or roughly EUR 278,000 a year. A unilateral APA settles the Luxembourg side for five years. Germany may still challenge the 4.30% rate; if that risk matters, a bilateral APA, slower and without a fee today, is the route.
Law and practice: LIR, Articles 166 and 168ter; carried interest regime in force from tax year 2026; Circular L.I.R. n° 56/1 – 56bis/1, paragraphs 27 to 30 on the 2% after-tax simplification; rates as on our Benelux rates page. Amounts illustrative.
Check which route fits your question
Simplified: Luxembourg direct tax rulings under § 29a AO. The result is an indication, not advice; timelines are practice, not law.
Tax ruling route check
Describe the question you want answered. You see the likely route in Luxembourg, an indicative timeline, the statutory fee band, what is exchanged with other states, whether certainty looks worth the effort and what to prepare.
Only for steps not yet carried out.
EUR 3,000–10,000, not refunded.
Binding while facts and law hold.
Cross-border rulings go to other states.
Luxembourg tax rulings: frequent questions
Are tax rulings still available in Luxembourg?
Yes. Since 1 January 2015 the procedure is set out in § 29a of the Abgabenordnung and a Grand-Ducal regulation of 23 December 2014. A company files a written request with its tax office, the Commission des décisions anticipées gives its opinion, and the tax office issues a written decision that binds the administration for up to five tax years.
How much does a Luxembourg tax ruling cost?
The statutory fee is EUR 3,000 to EUR 10,000 per request, set by the director of the direct tax administration according to complexity and workload. It is payable within one month, the commission starts work only after payment, and it is not refunded if the request is withdrawn, declined or answered negatively.
How long does a ruling take?
Practitioner guides report a final answer about two to three months after the fee is paid. The law sets no deadline; preparation and questions come on top.
Can I get a ruling on a transaction I have already done?
No. The request must describe operations that are seriously envisaged and have not yet produced their effects. For a completed transaction, the position is taken in the tax return and defended in the assessment. A ruling can still cover later steps that are not yet implemented.
Is my ruling sent to other countries?
If it is a cross-border ruling or an advance pricing arrangement, a summary is exchanged automatically with the other EU member states under DAC3 and, for the relevant treaty partners, under the OECD BEPS Action 5 standard. Since 1 January 2026, rulings for individuals are exchanged too where the cross-border transaction exceeds EUR 1.5 million.
Does the VAT authority issue rulings?
Not under § 29a. That procedure covers direct taxes administered by the Administration des contributions directes. The VAT authority, the AED, answers written questions in its own practice, but there is no statutory ruling procedure, fee or commission for VAT.
Does a Luxembourg ruling protect against State aid claims?
Not as such. A ruling confirms how Luxembourg law applies; it cannot grant an exemption or reduction. After the Court of Justice judgments in Fiat, Engie and Amazon, a ruling that applies the ordinary law correctly carries little State aid risk, but it gives no immunity.